1 /* Copyright (C) 1992, 93, 94, 97, 98, 99, 2001 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 /* Sleep USECONDS microseconds, or until a previously set timer goes off. */
26 usleep (useconds_t useconds)
29 struct timeval before, after;
31 recv = __mach_reply_port ();
33 if (__gettimeofday (&before, NULL) < 0)
35 (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
36 0, 0, recv, (useconds + 999) / 1000, MACH_PORT_NULL);
37 __mach_port_destroy (mach_task_self (), recv);
38 if (__gettimeofday (&after, NULL) < 0)